SenTRI VAD, Low Power Red Flash, Class C

FAQs

What is the difference between standard performance and high performance VAD models?

Standard performance VAD models like the SEN-S-VAD-LPR-R are certified to W3-8.5 coverage category under EN54-23, providing appropriate visual alarm indication for general fire alarm applications. High performance models offer adjustable intensity settings (high, medium, low) delivering increased light output and larger coverage areas (W-6.7-14 to W-5-9.5 categories). Standard performance models consume less current, allowing more devices per loop (up to 72 vs 38-47 for high performance), making them cost-effective for applications where enhanced coverage is not required.

How many SEN-S-VAD-LPR-R devices can be installed on a SenTRI loop?

The SEN-S-VAD-LPR-R low power consumption design allows up to 72 combined sounder-VAD devices per loop when using standard SenTRI loop cards. The enhanced 800mA loop card supports up to 70 combined sounder-VAD devices per loop whilst accommodating up to 200 total addressable devices including sensors, call points, and interfaces. Precise device counts should be calculated during system design using loop load design tools, considering the specific mix of devices and their current consumption in both standby and alarm conditions.

Can the sounder and VAD operate independently?

Yes, the SEN-S-VAD-LPR-R can be configured to operate the sounder and VAD independently through the SenTRI control panel programming. This flexibility allows the visual alarm to activate separately from the audible alarm if required by the fire safety strategy, enabling staged evacuation procedures or specific alert conditions where visual-only or audible-only notification is appropriate. Both outputs remain fully monitored and synchronised with other devices on the loop regardless of configuration mode.

What is HandiLink infrared remote control functionality?

HandiLink is an infrared remote control system that enables volume adjustment of SenTRI sounders during commissioning without requiring physical or mechanical access to the device. The commissioning engineer can adjust sound levels from floor level up to 3 metres away from the device, reducing installation time and eliminating the need for ladders or scaffold access during final system setup. This feature must be enabled at the control panel with password protection to prevent accidental or malicious adjustment, and is disabled automatically after commissioning is complete.

Is the SEN-S-VAD-LPR-R suitable for outdoor applications?

No, the SEN-S-VAD-LPR-R has an IP21 ingress protection rating designed for standard indoor applications in commercial, educational, and institutional premises. For outdoor applications or environments requiring enhanced environmental protection, the SenTRI range includes EP (Environmentally Protected) variants with IP66 rating that provide resistance to heavy rain, dust ingress, and temporary water jets. The EP range includes models such as SEN-S-VAD-HPR-EP-R for outdoor or harsh environment installations where increased protection is necessary.

What fire alarm tones are available on the SEN-S-VAD-LPR-R?

The SEN-S-VAD-LPR-R supports standard tone patterns and bell tone options that can be configured through the SenTRI control panel commissioning software. All tones are fully synchronised across the loop to prevent confusion during evacuation and comply with fire safety signalling requirements. The standard tone provides a distinctive alert signal, whilst the bell tone option is particularly useful in educational environments for class change or alternative alert scenarios. Tone selection and synchronisation parameters are managed centrally through the control panel cause and effect programming.